Owe is such a strong word, but generally yes, they should give an explanation as it is the standard professional response to breaking a promise/commitment.

I know there may be cultural differences, but in my experience, there's an unwritten standard professional convention to offer a brief explanation when missing a meeting at the last minute. They are usually brief-"I'm sorry I have to cancel, I have to pick up a sick kid from daycare" or "I apologize for cancelling at the last minute, but a pipe burst in my house".

Not offering basic courtesy and respect could point to a sense of entitlement or poor interpersonal skills.